Baby Safety / Compounds / 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran)

Is 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) safe for babies and kids?

High risk for kids

Infants accumulate 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) through breast milk (bioconcentration), placental transfer, and dust ingestion. Persistent pollutants concentrate in fatty tissues with extended half-lives in developing organisms.

What is 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran)?

The IUPAC name is 1,2,3,7,8-pentachlorodibenzofuran.

Also known as: 1,2,3,7,8-pentachlorodibenzofuran, 1,2,3,7,8-PeCDF, Dibenzofuran, 1,2,3,7,8-pentachloro-, PCDF 94.

IUPAC name: 1,2,3,7,8-pentachlorodibenzofuran
CAS number: 57117-41-6
Molecular formula: C12H3Cl5O
Molecular weight: 340.4 g/mol
SMILES: C1=C2C(=CC(=C1Cl)Cl)OC3=CC(=C(C(=C23)Cl)Cl)Cl
PubChem CID: 42138

Risk for babies

High risk

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Very high risk

2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) persists in maternal adipose tissue and is mobilized during pregnancy and lactation. Lipophilic pollutants concentrate in breast milk and cross the placenta during critical developmental windows.

Known reproductive toxicant (GHS H360) or confirmed endocrine disruptor. Placental transfer is presumed. Fetal exposure during critical developmental windows may cause structural malformations, growth restriction, or functional deficits.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

3 regulatory and scientific bodies have classified 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran). The classifications differ — that's the data.

Agency	Year	Classification	Notes
IARC	1997	Group 3	Monographs Volume 69
WHO	2005	TEF = 0.3	2005 WHO TEF scheme; highest TEF among PCDF congeners
EFSA	—	TWI of 2 pg WHO-TEQ/kg bw/week	Tolerable Weekly Intake for total PCDD/F and DL-PCB TEQ

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran)

Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran):

Exposure reduction (environmental contaminant)
Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.

Relative cost: 1.2-2×

Frequently asked questions

Is 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran) safe for kids?

What products contain 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran)?

2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran)?

2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) has been classified by 3 agencies including IARC, WHO, EFSA, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See 2,3,4,7,8-PeCDF (2,3,4,7,8-Pentachlorodibenzofuran) in the baby app

Look up products containing 2,3,4,7,8-pecdf (2,3,4,7,8-pentachlorodibenzofuran), compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)

IARC Monographs Volume 69: Polychlorinated Dibenzo-para-dioxins and Polychlorinated Dibenzofurans — TCDD Group 1; other PCDD/PCDF congeners Group 3 (1997); TCDD classification reaffirmed in IARC Volume 100F (2012) (1997) — regulatory
EFSA Panel on Contaminants in the Food Chain (CONTAM): Risk for Animal and Human Health Related to the Presence of Dioxins and Dioxin-Like PCBs in Feed and Food — TWI 2 pg WHO-TEQ/kg bw/week; TEF framework (WHO 2005); fatty fish, dairy, meat as primary exposure matrices (2018) (2018) — regulatory

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →